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src/cpu/zero/vm/jniTypes_zero.hpp@a9becfeecd1b (annotated)

src/cpu/zero/vm/jniTypes_zero.hpp

Wed, 22 Jan 2014 17:42:23 -0800

author

kvn

date

Wed, 22 Jan 2014 17:42:23 -0800

changeset 6503

a9becfeecd1b

parent 2314

f95d63e2154a

child 6876

710a3c8b516e

permissions

-rw-r--r--

Merge

never@1445	1	/*
stefank@2314	2	* Copyright (c) 1998, 2010, Oracle and/or its affiliates. All rights reserved.
never@1445	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
never@1445	4	*
never@1445	5	* This code is free software; you can redistribute it and/or modify it
never@1445	6	* under the terms of the GNU General Public License version 2 only, as
never@1445	7	* published by the Free Software Foundation.
never@1445	8	*
never@1445	9	* This code is distributed in the hope that it will be useful, but WITHOUT
never@1445	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
never@1445	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
never@1445	12	* version 2 for more details (a copy is included in the LICENSE file that
never@1445	13	* accompanied this code).
never@1445	14	*
never@1445	15	* You should have received a copy of the GNU General Public License version
never@1445	16	* 2 along with this work; if not, write to the Free Software Foundation,
never@1445	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
never@1445	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
never@1445	22	*
never@1445	23	*/
never@1445	24
stefank@2314	25	#ifndef CPU_ZERO_VM_JNITYPES_ZERO_HPP
stefank@2314	26	#define CPU_ZERO_VM_JNITYPES_ZERO_HPP
stefank@2314	27
stefank@2314	28	#include "memory/allocation.hpp"
stefank@2314	29	#include "oops/oop.hpp"
stefank@2314	30	#include "prims/jni.h"
stefank@2314	31
never@1445	32	// This file holds platform-dependent routines used to write primitive jni
never@1445	33	// types to the array of arguments passed into JavaCalls::call
never@1445	34
never@1445	35	class JNITypes : AllStatic {
never@1445	36	// These functions write a java primitive type (in native format)
never@1445	37	// to a java stack slot array to be passed as an argument to JavaCalls:calls.
never@1445	38	// I.e., they are functionally 'push' operations if they have a 'pos'
never@1445	39	// formal parameter. Note that jlong's and jdouble's are written
never@1445	40	// _in reverse_ of the order in which they appear in the interpreter
never@1445	41	// stack. This is because call stubs (see stubGenerator_zero.cpp)
never@1445	42	// reverse the argument list constructed by JavaCallArguments (see
never@1445	43	// javaCalls.hpp).
never@1445	44
never@1445	45	private:
never@1445	46	// Helper routines.
never@1445	47	static inline void put_int2 (jint *from, jint *to) { to[0] = from[0]; to[1] = from[1]; }
never@1445	48	static inline void put_int2 (jint *from, jint *to, int& pos) { put_int2 (from, (jint *)((intptr_t *)to + pos)); pos += 2; }
never@1445	49	static inline void put_int2r(jint *from, jint *to) { to[0] = from[1]; to[1] = from[0]; }
never@1445	50	static inline void put_int2r(jint *from, jint *to, int& pos) { put_int2r(from, (jint *)((intptr_t *)to + pos)); pos += 2; }
never@1445	51
never@1445	52	public:
never@1445	53	// Ints are stored in native format in one JavaCallArgument slot at *to.
never@1445	54	static inline void put_int(jint from, intptr_t *to) { *(jint *)(to + 0 ) = from; }
never@1445	55	static inline void put_int(jint from, intptr_t *to, int& pos) { *(jint *)(to + pos++) = from; }
never@1445	56	static inline void put_int(jint *from, intptr_t *to, int& pos) { *(jint *)(to + pos++) = *from; }
never@1445	57
never@1445	58	#ifdef _LP64
never@1445	59	// Longs are stored in native format in one JavaCallArgument slot at *(to+1).
never@1445	60	static inline void put_long(jlong from, intptr_t *to) { *(jlong *)(to + 1 + 0) = from; }
never@1445	61	static inline void put_long(jlong from, intptr_t *to, int& pos) { *(jlong *)(to + 1 + pos) = from; pos += 2; }
never@1445	62	static inline void put_long(jlong *from, intptr_t *to, int& pos) { *(jlong *)(to + 1 + pos) = *from; pos += 2; }
never@1445	63	#else
never@1445	64	// Longs are stored in reversed native word format in two JavaCallArgument slots at *to.
never@1445	65	// The high half is in *(to+1) and the low half in *to.
never@1445	66	static inline void put_long(jlong from, intptr_t *to) { put_int2r((jint *)&from, (jint *)to); }
never@1445	67	static inline void put_long(jlong from, intptr_t *to, int& pos) { put_int2r((jint *)&from, (jint *)to, pos); }
never@1445	68	static inline void put_long(jlong *from, intptr_t *to, int& pos) { put_int2r((jint *) from, (jint *)to, pos); }
never@1445	69	#endif
never@1445	70
never@1445	71	// Oops are stored in native format in one JavaCallArgument slot at *to.
never@1445	72	static inline void put_obj(oop from, intptr_t *to) { *(oop *)(to + 0 ) = from; }
never@1445	73	static inline void put_obj(oop from, intptr_t *to, int& pos) { *(oop *)(to + pos++) = from; }
never@1445	74	static inline void put_obj(oop *from, intptr_t *to, int& pos) { *(oop *)(to + pos++) = *from; }
never@1445	75
never@1445	76	// Floats are stored in native format in one JavaCallArgument slot at *to.
never@1445	77	static inline void put_float(jfloat from, intptr_t *to) { *(jfloat *)(to + 0 ) = from; }
never@1445	78	static inline void put_float(jfloat from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = from; }
never@1445	79	static inline void put_float(jfloat *from, intptr_t *to, int& pos) { *(jfloat *)(to + pos++) = *from; }
never@1445	80
never@1445	81	#ifdef _LP64
never@1445	82	// Doubles are stored in native word format in one JavaCallArgument slot at *(to+1).
never@1445	83	static inline void put_double(jdouble from, intptr_t *to) { *(jdouble *)(to + 1 + 0) = from; }
never@1445	84	static inline void put_double(jdouble from, intptr_t *to, int& pos) { *(jdouble *)(to + 1 + pos) = from; pos += 2; }
never@1445	85	static inline void put_double(jdouble *from, intptr_t *to, int& pos) { *(jdouble *)(to + 1 + pos) = *from; pos += 2; }
never@1445	86	#else
never@1445	87	// Doubles are stored in reversed native word format in two JavaCallArgument slots at *to.
never@1445	88	static inline void put_double(jdouble from, intptr_t *to) { put_int2r((jint *)&from, (jint *)to); }
never@1445	89	static inline void put_double(jdouble from, intptr_t *to, int& pos) { put_int2r((jint *)&from, (jint *)to, pos); }
never@1445	90	static inline void put_double(jdouble *from, intptr_t *to, int& pos) { put_int2r((jint *) from, (jint *)to, pos); }
never@1445	91	#endif
never@1445	92
never@1445	93	// The get_xxx routines, on the other hand, actually _do_ fetch
never@1445	94	// java primitive types from the interpreter stack.
never@1445	95	static inline jint get_int(intptr_t *from) { return *(jint *)from; }
never@1445	96
never@1445	97	#ifdef _LP64
never@1445	98	static inline jlong get_long(intptr_t *from) { return *(jlong *)from; }
never@1445	99	#else
never@1445	100	static inline jlong get_long(intptr_t *from) { return ((jlong)(*( signed int *)((jint *)from )) << 32) |
never@1445	101	((jlong)(*(unsigned int *)((jint *)from + 1)) << 0); }
never@1445	102	#endif
never@1445	103
never@1445	104	static inline oop get_obj(intptr_t *from) { return *(oop *)from; }
never@1445	105	static inline jfloat get_float(intptr_t *from) { return *(jfloat *)from; }
never@1445	106
never@1445	107	#ifdef _LP64
never@1445	108	static inline jdouble get_double(intptr_t *from) { return *(jdouble *)from; }
never@1445	109	#else
never@1445	110	static inline jdouble get_double(intptr_t *from) { jlong jl = ((jlong)(*( signed int *)((jint *)from )) << 32) |
never@1445	111	((jlong)(*(unsigned int *)((jint *)from + 1)) << 0);
never@1445	112	return *(jdouble *)&jl; }
never@1445	113	#endif
never@1445	114
never@1445	115	};
stefank@2314	116
stefank@2314	117	#endif // CPU_ZERO_VM_JNITYPES_ZERO_HPP